Time-fuse container for time and percussion fuses



' E. REMONDY TIME FUSE CONTAINER FOR TIME AND PERCUSSION' FUSES Filed Feb. 5, 1924 Patented Au .j11, 1925.

* we: STATES v LEON EMILE :REMOLTDY, mm, FRANCE, 1

' TIME-Fnsn CONTAINER non vrnvrn AND PERCUSSION asses;

- Application filed. February 5, 1924. Serial No. 690,813.

.TohalZ w hom it may concern. 7 i F'Beit, known that I,L1 '10N' EMILE Rn- MoNDr, a citizen of the Republic of France,

- resident of Paris, France, have invented new and useful Improvements in Time-Fuse 5. Containers for Time and Percussion Fuses, I which 1 is I fully set forth in theufollowing ,s'pecification. The present invention relates tea-retarding "device for percussion fusesandmore specifically applicable in combination with v fuses ofthe typedescribed in Patent No.'

'- 1,4;59,075, hich operate'by combined ramming and inertia.

V Fig. 1 of the accompanying dravvingis a sectional elevation of afuse support in Which V a fuse, of this type and a retarding device inac'cordance With the invention. are mountedyFlgs. 2,3 and 4am sectionalelevatlons ofl'modifications.

v. The essential characteristic result obtained 5 I by the new retarding device consists in that theretarding'composition therein is protect-V ed from any direct shoclrofthe gases, flames or explosion dbrisresulting from the opera- L I tion of the firing mechanism, these shocks I L being the more dangerous accordingly as the l explosive used for detonating said mecha- 1 nism is themore powerful; i I

i In accordance Withthe invention, the re- 'tardingcomposition is placed in the front portion of a sleeve which fits in the rear part I of theflaxial chamber of the fuse support or i V fuse body this front part of the'sleeve has adiameter smaller than the cavity of the fuse support and is protected by an extra I thick and suitably shaped deflecting shield,

capable of; stopping or retarding the move'-- 1*; ment of any solidmateriahwhile directing theretarding composition except through the gases and'fiames, which *can not reach.

7 if: the'annular space between the fuse support andfthe sleeve and'through flash holes perforated in the longitudina l Wall of'this' latter; The retarding composition in the re-' .duced portion of the sleeve may be placed in,

directcontact' With a charge of 'uncompressed, quick-burning powder forming a re; "layfforthe transmission of fire'to the detoi 150-; nator.

I In the exemplary embodiment illustrated v inFig. 1, A designates thefuse body screwed in the head of the projectile, and at the free s end of- Which a fuse G, of the type described in the previously mentioned patent, is re- 1 t ained by means of a pin 9.

In accordance With the invention, the re: Y

tarding device comprises a sleeve -Whl0l1fit5 Witl101lt play,in the rear'end' of the cavity'a Y of the fuse body -The closed front part B of this sleeve is; of smaller diameter, so

as :to leave a n pace 0? between its outer Wall and the inner Wall of the cavity 7 a. Thereduced portion of the sleeve ispr'otected by amass of metal B of suitable form conical, ovoid or otherwise) so as to form a deflecting shield, for the purpose hereinbefore indicated. The vretarding' or time burning composition D is placed in the front a part B having grooved Walls, of the sleeve,f

and access tothis composition the. gases or flames arising from the fuse Gris impossible until after 'their passage through the annular space at? and'through the openings 6 perforated in the longitudinal Wall of the partB r a The retarding composition may be placed in direct contact With a charge Eofuncompressed, quick-burning powder, which forms arelay;

The sleeve,by means of a flange b and, if

desired, withthe interposition of a felt or other packing Washer'li, bears against the rear'end of the fuse support, and isi'closedf at the: reariby meansof a thin cap 0, theedge of Which is folded over on the flange. 1

b and the entire assemblage is retained in position bythe detonatorI screwed in the i fuse support, With the" interposition f ngf phi Washer H.. I .v

number and at different levels; a variable.

number thereof may be perforatedlbefore the retarding deviceis positioned. As shown on the modification of Fig. 2, these openings, are suitably arranged in rows and distribu ted over the surface ofwthe' part- B and may normally be closed by suitable pinsP}, i

P? screwed in the fuse support andgtheicoun tersunk heads of 'which are accessible from the exterior to remove the same to provide the desired opening for thes elect d p ri q;

of retardation.

During. operation of, the fuse, the "gases,;' flames or splinters arising therefrom and I projected rearWardly, cannot directly strike the retardingcomposition D, since they are,

received by the deflecting shield B which prevents them from destroying the retarding composition through shock and assures proper operation thereof. y

The fire can not reach, the retarding or i i .7 90, The openings 6 m b of anyisuitable r screw thread.

time-burning composition D except through the annular space a surrounding the retarding composition and through the openings 2'). The form of the deflecting shield B facilitates the passage of the jets of gas or flame, the shock of which has been deadened, toward these openings.

It is furthermore to be noted that, the front surface of the retarding composition D being behind an extra thick part forming a shield, the result of the ignition of said composition will have a tendency to be advanced toward the least resistant wall, formed by the thin cap C.

The only element of the retarding device to be machined is a smooth sleeve without a The same type of retarding device may be used for a s ries of differentperiods of delay, and the. duration of the delay may be modified according to the number and position of the openings uncovered.

It is obvious that the construction shown,

which is of the simplest, is not the only pos sible form. The sleeve BB with the extra thick shield end B niay be made of two parts assembled by any suitable means, for example, by screwing, setting, or swaging.

As a modification, the deflecting shield may be formed as shown on Fig. 8, as a separate thimble forming a cap and fitted on the uniformly thick sleeve. The thimble is then perforated and the adjustment of retardation will be effected by rotation of the thimble to uncover the perforations b of the sleeve to a greater or less extent. The thimble, through a small collar 6 bears against a shoulder a of the fuse body A.

Fig. 4 shows another embodiment in sectional elevation.

In this form of construction the sleeve B-B which contains the retarding composition D in the front part of lesserdiameter and the quiclcburning powder E forming the relay in its rear part of greater diameter, has its rear portion fitted in the rear element A of a fuse body formed intwo parts AA The front part B of the sleeve with the deflecting shield 13", projects within a chamber formed in the rear of the element A of the fuse body, leaving the annular space A. This element A, forms the fuse support proper and is attached to the rear element A by screwing or other suitable means. The immovability of the retardingdevice BB is assured by the contact of its rear surface 12 against an inner shoulder A of the element A of the fuse support and by the rear surface a of the element A bearing on the shoulder formed between the two parts B and B.

With this method of mounting it is possible to withdraw the retarding device or to position it without it being necessary to withdraw the part of the fuse body in which the detonator is fitted from the projectile and without having to remove the detonator from the fuse body, it being sufficient to unscrew the element A. forming the fuse support proper in order to release the retarding device.

The retarding device provided with the deflecting shield, which forms the subject of the invention is, moreover, suited to the widest range of uses; Instead of being used as an easily removable or fixed retarding device, it may be arranged so as to be moved transversely or angularly at the interior of the fuse by any suitable means.

What I claim is:

1. A retarding device for percussion fuses comprising a chambered fuse-body having a percussion fuse, a sleeve within said chamber carrying amass of relay explosive and a tiine-burning composition, a massive shield between said percussion fuse and time-burning composition, an annular passage around said time-burning composition and in open communication with the chamber in front ofsaid shield, a graded series of ports be tween said passage and composition, and removable means closing said ports.

2. A retarding device for percussion fuses comprising a sectioned fuse-body, a chamber in said body having a percussion fuse, a sleeve fitting snugly within said chamber and having a reduced forward portion, a time-burning composition in said reduced portion and a relay explosive in said sleeve, the side walls of said reduced portion having a plurality of perforations in open communication with said chamber, and a massive shield between the percussion fuse and the said reduced portion of the sleeve.

3. A retarding device for percussion fuses comprising a chambered fuse-body having a percussion fuse, a sleeve fitting snugly within said chamber and having a reduced for-- ward portion, a thinible-shaped massive shield fitted on said reduced portion and having apertures through the side walls of said .thiinble and reduced portion, a relay explosive in said sleeve and a time-burning composition in said reduced portion.

In testimony whereof I have signed this specification.

LEON EMILE REMONDY. 

